<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>轮播图的导航点</title>
</head>
<style>
    .banner {
        position: relative;
    }
    .dots {
        background-color: gray;
        position: absolute;
        height: 48px;
        bottom: 4px;
    }
    .dot {
        display: block;
        float: left;
        width: 48px;
        height: 48px;
        position: relative;
    }
    .dot:hover::before {
        content: '';
        display: block;
        background-color: #fff;
        width: 48px;
        height: 48px;
        border-radius: 50%;
        opacity: .2;
    }
    .dot::after {
        content: '';
        display: block;
        width: 20px;
        height: 20px;
        border: 6px solid #fff;
        position: absolute;
        top: 8px;
        left: 8px;
        border-radius: 50%;
        opacity: .4;
    }
    .dot:hover::after {
        opacity: 1;
        background-color: #fff;
    }
</style>
<body>
<div class="banner">
    <img src="../img/1.jpg" alt="">
    <div class="dots">
        <i class="dot active"></i>
        <i class="dot"></i>
        <i class="dot"></i>
        <i class="dot"></i>
        <i class="dot"></i>
        <i class="dot"></i>
        <i class="dot"></i>
        <i class="dot"></i>
    </div>
</div>
</body>
</html>
